Installed gpu now pc won't do anything

[Amdiir]

Just finished a new build, because my gpu just came in. Pc has been working for several days using intigrated graphics. But as soon as I powered it down and installed the gpu now all I get is the led on the io heatsink is slowly pulsing a red light. The fans won't spin the other lights won't come on. Just updated bios, running windows 11 pro. 

 

I've now taken the gpu back out and it still won't work. 

 

Asus rog strix z690-a mobo

Intel 12700k

Firecuda 530 1tb ssd

Firecuda 4tb hdd

Gskill ddr4 3600

Asus rog strix 850w psu

Fractal meshify 2

Asus rog strix 3080 10gb V2 white

 

[Amdiir]

Gpu was in a vertical mount using a gen 3 riser cable

[An0maly_76]

You may need to disable the iGPU in BIOS. They will conflict if it is still enabled. Riser cable could also be faulty. Can you mount it directly in the slot temporarily to check this?

Edited June 21, 2022 by An0maly_76
Revised, more info

[Amdiir]

I completely removed the gpu and it still doesn't power on. I can try installing the gpu in its normal alignment if that might make a difference. 

[An0maly_76]

Just now, Amdiir said:

I completely removed the gpu and it still doesn't power on. I can try installing the gpu in its normal alignment if that might make a difference. 

You may need to disable the iGPU in BIOS, that might be the whole problem. Didn't catch the iGPU the first time I read it.

[Amdiir]

This light is the only thing that is even indicating that it's getting power at all

[An0maly_76]

When you say io heatsink, what specifically are you referring to?

 

Nevermind, I see now.

[Amdiir]

The light in the picture above. 

[Amdiir]

It will blink on and the slowly dim down until its off. 

[An0maly_76]

Is your video cable plugged into the GPU or the motherboard? You might try unplugging the machine for a bit, removing the riser cable, plug the video cable into the motherboard's video out. If you can get into BIOS that way, disable the iGPU in BIOS settings. The 3080 should automatically disable iGPU anyway, but that will likely fix this. Only trouble is, if your 3080 is DOA, you might have a problem here.

Edited June 21, 2022 by An0maly_76
Revised, more info

[Amdiir]

The system won't power on at all. I tried all the power cables and connections, and they are all secure. The fans don't even spin up. 

[Amdiir]

Just now I shorted the power pins and this time it's started up. Seeing if I can get into bios

[Amdiir]

Problem seems to be resolved thank you for the assistance!